Oil-well reamer



.l. C. JONES.

OIL WELL REAMER.

APPLICATION FILED JAN. 31, 1920.

1 ,3?L425. atented Mar. 15, 1921.

3 SHEETS-SHEET 1.

INVENTOR A TTORNE)" J. C. JONES.

OIL WELL REAMER. APPLICATION FILEDJAN. 31.- 1920.

Patentd Mar. 15, 1921.

3 SHEETS-SHEET 2.

I g uwemtoz Judson. 6. Jaws.

(1 than J. C. JONES.

OIL WELL REAMER.

' APPLICATION FILED JAN. 31, 1920. 1,371,425. PatentedMar. 15,1921.

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OIL-WELL BRAKES.

Specification of Letters Patent.

Patented Mar. 15, 1921.

Application filed January :1, 1920. Serial in. 355,501.

To all whom it may concern Be it known that I, Jonson C. Jones a citizenof the United States, residing at Independence, in the county of,Montgomery and State of Kansas,

Reamers; and I do declare the following to be a full, clear, and exactdescri tion of the may be operated for movin elements into functionininvention, such as will enable ot ers skilled in theart'to which itappertains to make and use the'same, reference being bad to theaccompanying drawings, and to the letters and figures of referencemarked thereon, which form a part of this specification.

This invention relates to reamers for oil wells and the like and one ofthe objects thereof is to provide means whereby the cavity at the bottomof a well may be efficiently reamed for cleaning or for other purposes.7

It is primarily the object of my invention to provide. means whereby thereamer may be introduced into the well with the reaming elements in acollapsed -or non-functioning position, and to provide means whereby,after the reamer is in position, mechamsm the reaming posltion and,further, to provide means w ereby the reaming elements may be maintainedin'contact with the walls of the well cavity during the operation of thereamer, the construction being such, however, that the remainingelements may be retracted to non-functional position at the completionof the reaming operation so that the reamer may be readily withdrawnfrom the well.

Means is also provided for vertically adjusting the reamer within thewell as well as for causing rotative movement to be applied thereto sothat the reaming elements may become effective for the purpose intended.

In the drawings,

Figure I is a side elevational view of a reamer constructed inaccordance with my invention.

Fig. II is a vertical, longitudmal, sectional view of a reamer with thereaming elements in non-functional position, ready to be inserted intothe well.

Fig. III is a similar view, shown the reammg elements expanded intofunctional position.

have invented certain new and useful Improvements in Oil-Well Fig. IV isa fragmentary side elevational view of a reamer casing.

I 1g. V is a sectional view through a yoke for suspending the reamer inthe well.

F1 VI is a sectional view on the line VI- I of Fig. I, and

yoke.

1 designates a well, in the bottom of which is a cavity which mayconsist of the stages 2, 3 and 4, the construction of the cavlty,however, being immaterial. 5 is a well lining or casing and about the tothereof is a frame 6 supportin a shaft carrying a pulley 8, by means 0which the shaft 7 may be driven from any suitable source of power, andsaid shaft 7 is shown as provided with a beveled pinion 9, meshing witha gear 10 adapted to rotate a shaft 11, slidable with respect to thegear 10 the rotation bein effective through the medium of an upstandingarm 12 on the gear, which may contact wlth a vertically adjustable leverarm 13 on shaft 11, which may be suspended from any suitable sourcethrough the medium of a yoke 14, carrying a collar 15, loose on shaft 11and supporting the anti-friction bearings 16 for the collar 17 fastenedon shaft 11. The shaft 11 is providedwith a pressure pipe inlet 18,whereby pressure from the pipe 19 may be introduced into the hollow rodor shaft 11 to actuate certain reaming mechanism, to be referred tohereinafter. The hollow rod or shaft 11 is connected to. a reamercylinder or tube 20 by a connection 21, as will be apparent by referenceto Figs. 1, II and III.

The cylinder or tube 20 is provided with a pressure chamber 22, one endof "which communicates with the hollow rod or shaft 11, the other endbeing closed by a plu disk 24, against which one end of a e05 spring 25abuts, the opposite end of the coil sprin being fastened at 26 to anactuating rod 2 projecting through a stufiing box 28 in the plu 24 andextending the entire length of t e subjacent chamber 29 of the cylmder20. The lower end of the rod 27 carries a cap 30 which is ada tedto-abut against the lower end of the tube 20 to provide a stop to limitthe upward movement of the rod 27 under the action of the spring 25 andsaid sto or disk 30 is of greater diameter than t e diameter of the tube20 Fig. VII is a slightlymodified form of and carries at its peripheryan upstandin flange 31, adapted to receive the free ends 32 of theradlal reamer arms 33, pivoted in the openings 34 of the tube 20. Thearms 33 have wardly and downwardly projecting sprea r-engaging portions35, adapted to contact with the conical spreaders 36 carried by the rod27 and adapted to move into spreading position under the influence ofpressure in chamber 22, exerted against the piston 37 on rod 27 andmoving in opposite direction to the force exerted by the spring 25.

When the arms 33 are swung outwardly, they are guided in proper spacedrelation by the slots or notches 38 in the rigid collar 39 fastened tothe tube 20, the upper edges of the notches serving as stops which alsoaid in affording rigidity to the arms at their points of connection sothat they will main tain .as nearly as possible true radial positionswith respect to the tube; When the expander 36 moves in an upwarddirection. the arms 33 will,.by gravity, drop close to the tube andsince the retraction of the expander moves slightly in advance of theretaining collar 31, the ends 32 will drop into position to be embracedby the flange 31 and be held in retracted position, as clearly seen inFig. II.' v

The sets of arms may be multiplied to suit conditions and I have hereillustratedthree sets of arms, the lower'set-being just 41, the crossarms'41operating in slots 42 in the tube 20." The ri id collars, thearms and the .expanders'for t -e'secondary sets are substantially likethose just described-and it is, therefore, deemed unnecessary to againdescribe these in detail, it'being sufiicient to, indicate thatlthefiange collars 41 move up} "-into'position to receive"the.ends;32 ofthe arms 33 in "substantially the 'same wayas theflangediskf30heretoforedescribed.

structedfof rough, unmachined, tubin' or.

i "6 0 rod orshaft 11 through the medium of the pipin it being desirableto provi e a smoot JSIII'faQGIfOI" the packing of the pisgears 9- and10, it being understood that the shaft or rod 11 is suspended from theyoke 14. If the valve 44 in the pipe 19 is opened to admit pressure intothe chamber 22, the piston 37 will be actuated against the spring tainedat all times.

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25 to move the conical reamer element spreaders into functioningposition so that t ey will contact with the ends 35 of the arms 33 andexert a tendency to expand the group radially. Since the retainers,consisting of the flanged disk 30 and the collars 40, move with the rod27 and therefore, with .the expanders, the movement of the expandersinto functioning position will result in moving the retainers intonon-functioning position; that is, when the expanders move intofunctioning position, the reamer arm retainers move out of holdingposition, and vice versa. As the iston moves under the pressure of thefluid 1n the chamber 22, the arms will be forced to as nearly horizontalpositions as the side walls of the cavity of the well will permit and bymaintaining a pressure upon the piston 27 during the rotative movementof the rod 11 and thecylinder 20, contact of the arms with the wallofthe cavity will be main- The reamer may be raised and lowered during thereaming operation through the medium of'the yoke, the length of the arm12 permitting a limited movement of the reamer because the reamer willbe rotated with the arm 13 in any position between the ends of the arm12. .If it is desired to lower the reamer to a position in excess of theloosenedand adjusted'for this p p described and the two upper sets beingsuby stantially the same in construction as-the 'one just described withthe exception of the retaining means. In place of the cap 31, the

upper setsare provided with sliding-collars 40, secured to the rod 27 bythe cross arms I prefer to arrange the sets of reamer arms inprogressively decreasing lengths or s zes since the top of the chambermay be initially reamed to one size bv the top reamer, that stage of thecavity being enlarged by the second reamer and finally completed'by thethird, if three reaming sets are employed. The exact arrangement of thereamer arms. however, is not deemed an essential part of the invention.

In Fig. VIII have shown a slightly modi- "fiedform of rod connection forthe expand- .ers. Inthis form, the cylinder or tube 20' is capped atits-upper end by a cap 45,- which supports a threaded rod 46, thethreaded aged by a wrench or other suitable tool to x d. 47; ing a nut48 adapted to be en- Igfid'esired, the chamber 22 may be proi Tvidedfwith alining 43, this-generally bein I desirable because thecylinder20'will be conthe rod 46 may be raised and lowered so as -to'move the ex anders 36 into and out of 1 functional position. If thisconstruct1on is used, the piston, the air pressure and the I retractingspring. may be dispensed with,

but where air is available, I prefer to utilize the air actuated deviceonaccount of convenience of o oration.

From the oregoing it will be apparent that the'device may be easilyintroduced into the well, and that upon'opening the valve 44 or itsequivalent,-the reamer arm sets may be expanded into functioningposition and upon the completion of the work, they will be retractedinto non-functioning positions whereby the tool may be withdrawn fromthe well in an easy and expeditious manner.

What I claim and desire to secure by Letters-Patent is:

1. An oil well reamer device comprising a cylinder, arms havinghook-shaped ends engaging apertures in the cylinder wall, a rod havingmovement longitudinally of the cylinder, an expander on the rod to pressagainst the hook-shaped ends when the rod is moved in one direction, anarm retainer on the rod to engage the outer ends of the arms when therod is moved in an opposite direction, and means for operating the rod.

2. An oil well reamer comprising a cylindrical member having openings inthe wall thereof, arms having hook-shaped ends loosely engaging theopenings whereby the arms are pivot-ally connected to the wall of thecylindrical member, and an expanding device movable longitudinally inthe cylindrical member.

3. An oil well reamer comprising a cylindrical member having openings inthe Wall thereof, independently mounted arms having hook-shaped endsextending through the openings with the terminals of the hookshapedendsprojecting within the cylindrical member, and an expanding membermovable longitudinally within the cylindrical member.

4;. An oil well reamer comprising a cylindrical member having openingsin the wall thereof, independently mounted arms having hook-shaped endsextending through the openings with the terminals of the hookshaped endsprojecting within the cylindrical member, an expanding member movablelongitudinally within the cylindrical member, a rod for operating saidexpending member, and arm-end engaging devices fixed to the rod.

5. An oil well reamer comprising a cylindrical member having openings inthe wall thereof, independently mounted arms having hook-shaped endsextending through the openings with the terminals of the hookshaped endsprojecting within the cylindric'al member, an expanding member movablelongitudinally within the cylindrical member, a rod for operating saidexpanding member, and arm-end engaging devices comprising upwardlyflanged disks fixed to the ro '6. In an oil Well reamer, a cylindricalmember having openings in the wall thereof, a fixed collar adjacent tothe openings,

the lower edge of which is slotted, independently mounted arms havinghook-shaped en'ds extending through the slotted portion of the collarand through the openin s in the cylindrical member, the inner en 5 ofthe hooks projecting within the cylindrical member, a conical expandingmember for contact with the hooked ends of the arms, and means foractuating said expander.

In testimony whereof I aflix my signature.

JUDSON C. JONES.

